Optical Configuration

A two-mirror system (M1 and M2) collects and re-images the synchrotron infrared
source at a point just outside of the storage ring's UHV. M1 is a water-cooled plane
mirror made from silicon with a gold reflective coating. M2 is a glass ellipsoid with
an aluminum reflective coating. The ellipsoidal mirror focuses the beam through an
11mm clear aperture wedged diamond window (~350 microns thick). Delivered spectral
range extends from approximately 20 cm-1 to beyond 40,000 cm-1. The infrared is then
collimated to a diameter of 14 mm and transported under rough vacuum through either a
CsI or polyethylene window and into the nitrogen-purged, Spectra Tech Irus endstation.

Participating Institutions

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One of ten national laboratories overseen and primarily funded by the Office of Science of the
U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical,
biomedical, and environmental sciences, as well as in energy technologies and national security.
Brookhaven Lab also builds and operates major scientific facilities available to university, industry
and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven
Science Associates, a limited-liability company founded by the Research Foundation for the State
University of New York on behalf of Stony Brook University, the largest academic user of Laboratory
facilities, and Battelle, a nonprofit applied science and technology organization.